Unless I've grossly misread your code, it looks like you're sending off a seperate email message for each and every recipient. It would be vastly more efficient to sort the list of recipients by their domain, and send off one message to each mx with all of the recipients BCC'd instead of sent directly to them.

An even easier alternative is just to pass a single message off to a local copy of sendmail with all of the recipients BCC'd, with the To set to yourself, and let sendmail sort it out. After all, sendmail has been solving this problem for years - why reinvent the wheel?

In reply to Re: Slow mass mailer (used for sending out a newsletter, not spam) by fs
in thread Slow mass mailer (used for sending out a newsletter, not spam) by vxp

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